<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" href="../../../style.css" type="text/css" media="screen">
<link rel="stylesheet" href="../../../print.css" type="text/css" media="print">
<meta content="ALTimeConverter,com.jidolstar.astro.ALTimeConverter,currentJD,currentJDE,JD2GAST,JD2GMST,JD2JDE,JD2LAST,JD2LCT,JD2LMST,LCT2GAST,LCT2GMST,LCT2JD,LCT2LAST,LCT2LMST,getJulianCentury,getJulianCenturyJ2000,getJulianYear,getJulianYearJ2000" name="keywords">
<title>com.jidolstar.astro.ALTimeConverter</title>
</head>
<body>
<script type="text/javascript" language="javascript" src="../../../asdoc.js"></script><script type="text/javascript" language="javascript" src="../../../cookies.js"></script><script type="text/javascript" language="javascript">
<!--
				asdocTitle = 'ALTimeConverter - as3astrolib';
				var baseRef = '../../../';
				window.onload = configPage;
			--></script>
<table style="display:none" id="titleTable" cellspacing="0" cellpadding="0" class="titleTable">
<tr>
<td align="left" class="titleTableTitle">as3astrolib</td><td align="right" class="titleTableTopNav"><a onclick="loadClassListFrame('../../../all-classes.html')" href="../../../package-summary.html">All&nbsp;Packages</a>&nbsp;|&nbsp;<a onclick="loadClassListFrame('../../../all-classes.html')" href="../../../class-summary.html">All&nbsp;Classes</a>&nbsp;|&nbsp;<a onclick="loadClassListFrame('../../../index-list.html')" href="../../../all-index-A.html">Index</a>&nbsp;|&nbsp;<a href="../../../index.html?com/jidolstar/astro/ALTimeConverter.html&amp;com/jidolstar/astro/class-list.html" id="framesLink1">Frames</a><a onclick="parent.location=document.location" href="" style="display:none" id="noFramesLink1">No&nbsp;Frames</a></td><td rowspan="3" align="right" class="titleTableLogo"><img alt="Adobe Logo" title="Adobe Logo" class="logoImage" src="../../../images/logo.jpg"></td>
</tr>
<tr class="titleTableRow2">
<td align="left" id="subTitle" class="titleTableSubTitle">Class&nbsp;ALTimeConverter</td><td align="right" id="subNav" class="titleTableSubNav"><a href="#propertySummary">Properties</a>&nbsp;| <a href="#methodSummary">Methods</a></td>
</tr>
<tr class="titleTableRow3">
<td colspan="2">&nbsp;</td>
</tr>
</table>
<script type="text/javascript" language="javascript">
<!--
if (!isEclipse() || window.name != ECLIPSE_FRAME_NAME) {titleBar_setSubTitle("Class ALTimeConverter"); titleBar_setSubNav(false,true,false,false,false,false,true,false,false,false,false,false,false,false);}
--></script>
<div class="MainContent">
<table cellspacing="0" cellpadding="0" class="classHeaderTable">
<tr>
<td class="classHeaderTableLabel">Package</td><td><a onclick="javascript:loadClassListFrame('class-list.html')" href="package-detail.html">com.jidolstar.astro</a></td>
</tr>
<tr>
<td class="classHeaderTableLabel">Class</td><td class="classSignature">public class ALTimeConverter</td>
</tr>
</table>
<p></p>
  ALTimeConverter
  
  Various static methods.
  "Astronomical Algorithms"(2nd Edition), by Jean Meeus
  
  <p></p>
<br>
<hr>
</div>
<a name="propertySummary"></a>
<div class="summarySection">
<div class="summaryTableTitle">Public Properties</div>
<table id="summaryTableProperty" class="summaryTable " cellpadding="3" cellspacing="0">
<tr>
<th>&nbsp;</th><th colspan="2">Property</th><th class="summaryTableOwnerCol">Defined&nbsp;by</th>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a class="signatureLink" href="#currentJD">currentJD</a> : Number<div class="summaryTableDescription">[static][read-only]
   현재 Julian Date(JD)
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a class="signatureLink" href="#currentJDE">currentJDE</a> : Number<div class="summaryTableDescription">[static][read-only]
   현재 Julian Ephemeris Date(JDE)
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
</table>
</div>
<a name="methodSummary"></a>
<div class="summarySection">
<div class="summaryTableTitle">Public Methods</div>
<table id="summaryTableMethod" class="summaryTable " cellpadding="3" cellspacing="0">
<tr>
<th>&nbsp;</th><th colspan="2">Method</th><th class="summaryTableOwnerCol">Defined&nbsp;by</th>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#getJulianCentury()">getJulianCentury</a>(fromJD:Number, toJD:Number):Number</div>
<div class="summaryTableDescription">[static]
   Julian Century
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#getJulianCenturyJ2000()">getJulianCenturyJ2000</a>(JD:Number):Number</div>
<div class="summaryTableDescription">[static]
   Julian Century, between J2000.0 and the starting epoch.</div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#getJulianYear()">getJulianYear</a>(fromJD:Number, toJD:Number):Number</div>
<div class="summaryTableDescription">[static]
   Julian Year
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#getJulianYearJ2000()">getJulianYearJ2000</a>(JD:Number):Number</div>
<div class="summaryTableDescription">[static]
   Julian Year, between J2000.0 and the stating epoch.</div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#JD2GAST()">JD2GAST</a>(JD:Number, nutationInLongitude:Number, obliquityOfEclipse:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Julian Date(JD) to Greenwich Apparent Sidereal Time(GAST)<br><br>
   GAST = GMST + Δψ cos ε<br>
   Δψ: 황도상에서 장동운동에 의한 황경 변화값(the nutation in longitude)<br>
   Δε: 황도상에서 장동운동에 의한 기울기 변화값(the nutation in obliquity)<br>  
   ε0: 적도와 황도의 기울기 평균값(the mean obliquity of the ecliptic)<br>
   ε : 적도와 황도의 기울기 실제값(the true obliquity of the ecliptic) ε = ε0 + Δε<br>
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#JD2GMST()">JD2GMST</a>(JD:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Julian Date(JD) to Greenwich Mean Sidereal Time(GMST)
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#JD2JDE()">JD2JDE</a>(JD:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Julian Date(JD) to Julian Ephemeris Date(JDE) 
   
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#JD2LAST()">JD2LAST</a>(JD:Number, obsLongitude:Number, nutationInLongitude:Number, obliquityOfEclipse:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Julian Date(JD) to Local Apparent Sidereal Time(LAST)<br><br>
   GAST = GMST + Δψ cos ε<br>
   Δψ: 황도상에서 장동운동에 의한 황경 변화값(the nutation in longitude)<br>
   Δε: 황도상에서 장동운동에 의한 기울기 변화값(the nutation in obliquity)<br>  
   ε0: 적도와 황도의 기울기 평균값(the mean obliquity of the ecliptic)<br>
   ε : 적도와 황도의 기울기 실제값(the true obliquity of the ecliptic) ε = ε0 + Δε<br>
   
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#JD2LCT()">JD2LCT</a>(JD:Number, timezoneOffset:Number = -540):<a href="../astro/ALCalendarDate.html">ALCalendarDate</a>
</div>
<div class="summaryTableDescription">[static]
   Conversion of Julian Date(JD) to Local Civil Time (지방시민시) 
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#JD2LMST()">JD2LMST</a>(JD:Number, obsLongitude:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Julian Date(JD) to Local Mean Sidereal Time(GMST)
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#LCT2GAST()">LCT2GAST</a>(year:int, month:int, fractionalDay:Number, timezoneOffset:Number, nutationInLongitude:Number, obliquityOfEclipse:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Local Civil Time(LCT) to Greenwich Mean Sidereal Time(GAST)
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#LCT2GMST()">LCT2GMST</a>(year:int, month:int, fractionalDay:Number, timezoneOffset:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Local Civil Time(LCT) to Greenwich Mean Sidereal Time(GMST)
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#LCT2JD()">LCT2JD</a>(year:int, month:int, fractionalDay:Number, timezoneOffset:Number = -540):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Local Civil Time (LCT) to Julian Date(JD) 
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#LCT2LAST()">LCT2LAST</a>(year:int, month:int, fractionalDay:Number, timezoneOffset:Number, obsLongitude:Number, nutationInLongitude:Number, obliquityOfEclipse:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Local Civil Time(LCT) to Local Apparent Sidereal Time(LAST)
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
<tr class="">
<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol">
<div class="summarySignature">
<a class="signatureLink" href="#LCT2LMST()">LCT2LMST</a>(year:int, month:int, fractionalDay:Number, timezoneOffset:Number, obsLongitude:Number):Number</div>
<div class="summaryTableDescription">[static]
   Conversion of Local Civil Time(LCT) to Local Mean Sidereal Time(LMST)
   </div>
</td><td class="summaryTableOwnerCol">ALTimeConverter</td>
</tr>
</table>
</div>
<script type="text/javascript" language="javascript">
<!--
showHideInherited();
--></script>
<div class="MainContent">
<a name="propertyDetail"></a>
<div class="detailSectionHeader">Property detail</div>
<a name="currentJD"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">currentJD</td><td class="detailHeaderType">property</td>
</tr>
</table>
<div class="detailBody">
<code>currentJD:Number</code>&nbsp;&nbsp;[read-only]<p>
   현재 Julian Date(JD)
   </p><span class="label">Implementation</span>
<br>
<code>&nbsp;&nbsp;&nbsp;&nbsp;public static function get currentJD():Number</code>
<br>
</div>
<a name="currentJDE"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">currentJDE</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>currentJDE:Number</code>&nbsp;&nbsp;[read-only]<p>
   현재 Julian Ephemeris Date(JDE)
   </p><span class="label">Implementation</span>
<br>
<code>&nbsp;&nbsp;&nbsp;&nbsp;public static function get currentJDE():Number</code>
<br>
</div>
<a name="methodDetail"></a>
<div class="detailSectionHeader">Method detail</div>
<a name="getJulianCentury()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">getJulianCentury</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td>
</tr>
</table>
<div class="detailBody">
<code>public static function getJulianCentury(fromJD:Number, toJD:Number):Number</code><p>
   Julian Century
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">fromJD</span>:Number</code></td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">toJD</span>:Number</code></td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; Julian Century
   </td>
</tr>
</table>
</div>
<a name="getJulianCenturyJ2000()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">getJulianCenturyJ2000</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function getJulianCenturyJ2000(JD:Number):Number</code><p>
   Julian Century, between J2000.0 and the starting epoch.  
   Let T be the time interval, in Julian centuries, between J2000.0 and the starting epoch. 
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">JD</span>:Number</code></td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; Julian Century
   </td>
</tr>
</table>
</div>
<a name="getJulianYear()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">getJulianYear</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function getJulianYear(fromJD:Number, toJD:Number):Number</code><p>
   Julian Year
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">fromJD</span>:Number</code></td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">toJD</span>:Number</code></td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; Julian Year
   </td>
</tr>
</table>
</div>
<a name="getJulianYearJ2000()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">getJulianYearJ2000</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function getJulianYearJ2000(JD:Number):Number</code><p>
   Julian Year, between J2000.0 and the stating epoch.
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">JD</span>:Number</code></td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; Julian Year
   </td>
</tr>
</table>
</div>
<a name="JD2GAST()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">JD2GAST</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function JD2GAST(JD:Number, nutationInLongitude:Number, obliquityOfEclipse:Number):Number</code><p>
   Conversion of Julian Date(JD) to Greenwich Apparent Sidereal Time(GAST)<br><br>
   GAST = GMST + Δψ cos ε<br>
   Δψ: 황도상에서 장동운동에 의한 황경 변화값(the nutation in longitude)<br>
   Δε: 황도상에서 장동운동에 의한 기울기 변화값(the nutation in obliquity)<br>  
   ε0: 적도와 황도의 기울기 평균값(the mean obliquity of the ecliptic)<br>
   ε : 적도와 황도의 기울기 실제값(the true obliquity of the ecliptic) ε = ε0 + Δε<br>
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">JD</span>:Number</code> &mdash; Julian Date
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">nutationInLongitude</span>:Number</code> &mdash; the nutation in longitude in radian
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">obliquityOfEclipse</span>:Number</code> &mdash; the true obliquity of the ecliptic in radian
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; Greenwich Apparent Sidereal Time(GAST) in radians
   </td>
</tr>
</table>
</div>
<a name="JD2GMST()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">JD2GMST</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function JD2GMST(JD:Number):Number</code><p>
   Conversion of Julian Date(JD) to Greenwich Mean Sidereal Time(GMST)
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">JD</span>:Number</code> &mdash; Julian Date
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; GMST in radians
   </td>
</tr>
</table>
</div>
<a name="JD2JDE()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">JD2JDE</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function JD2JDE(JD:Number):Number</code><p>
   Conversion of Julian Date(JD) to Julian Ephemeris Date(JDE) 
   
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">JD</span>:Number</code> &mdash; Julian Date
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; Julian Ephemeris Date(JDE) 
   </td>
</tr>
</table>
</div>
<a name="JD2LAST()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">JD2LAST</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function JD2LAST(JD:Number, obsLongitude:Number, nutationInLongitude:Number, obliquityOfEclipse:Number):Number</code><p>
   Conversion of Julian Date(JD) to Local Apparent Sidereal Time(LAST)<br><br>
   GAST = GMST + Δψ cos ε<br>
   Δψ: 황도상에서 장동운동에 의한 황경 변화값(the nutation in longitude)<br>
   Δε: 황도상에서 장동운동에 의한 기울기 변화값(the nutation in obliquity)<br>  
   ε0: 적도와 황도의 기울기 평균값(the mean obliquity of the ecliptic)<br>
   ε : 적도와 황도의 기울기 실제값(the true obliquity of the ecliptic) ε = ε0 + Δε<br>
   
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">JD</span>:Number</code> &mdash; Julian Date
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">obsLongitude</span>:Number</code> &mdash; observer longitude in degrees, East is Positive
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">nutationInLongitude</span>:Number</code> &mdash; the nutation in longitude in radian
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">obliquityOfEclipse</span>:Number</code> &mdash; the true obliquity of the ecliptic in radian
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; Local Apparent Sidereal Time(LAST) in radians
   </td>
</tr>
</table>
</div>
<a name="JD2LCT()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">JD2LCT</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function JD2LCT(JD:Number, timezoneOffset:Number = -540):<a href="../astro/ALCalendarDate.html">ALCalendarDate</a></code><p>
   Conversion of Julian Date(JD) to Local Civil Time (지방시민시) 
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">JD</span>:Number</code> &mdash; Julain Date
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">timezoneOffset</span>:Number</code> (default = <code>-540</code>)<code></code> &mdash; KST의 경우 -540 minutes( = -9 hours ), 경도 0도 부터 동쪽은 -, 서쪽은 +값이고 반드시 단위는 minute이어야 한다.
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code><a href="../astro/ALCalendarDate.html">ALCalendarDate</a></code> &mdash; 
                        ALCalendarDate 객체
   
                        
                     </td>
</tr>
</table>
</div>
<a name="JD2LMST()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">JD2LMST</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function JD2LMST(JD:Number, obsLongitude:Number):Number</code><p>
   Conversion of Julian Date(JD) to Local Mean Sidereal Time(GMST)
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">JD</span>:Number</code> &mdash; Julian Date
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">obsLongitude</span>:Number</code> &mdash; observer longitude in degrees, East is Positive
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash; LMST in radians
   </td>
</tr>
</table>
</div>
<a name="LCT2GAST()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">LCT2GAST</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function LCT2GAST(year:int, month:int, fractionalDay:Number, timezoneOffset:Number, nutationInLongitude:Number, obliquityOfEclipse:Number):Number</code><p>
   Conversion of Local Civil Time(LCT) to Greenwich Mean Sidereal Time(GAST)
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">year</span>:int</code> &mdash; 년 
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">month</span>:int</code> &mdash; 월
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">fractionalDay</span>:Number</code> &mdash; 분수값을 가지는 일(day)
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">timezoneOffset</span>:Number</code> &mdash; KST의 경우 -540 minutes( = -9 hours ), 경도 0도 부터 동쪽은 -, 서쪽은 +값이고 반드시 단위는 minute이어야 한다.
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">nutationInLongitude</span>:Number</code> &mdash; the nutation in longitude in radian
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">obliquityOfEclipse</span>:Number</code> &mdash; the true obliquity of the ecliptic in radian
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash;  Greenwich Apparent Sidereal Time(GAST) in radians
   </td>
</tr>
</table>
</div>
<a name="LCT2GMST()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">LCT2GMST</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function LCT2GMST(year:int, month:int, fractionalDay:Number, timezoneOffset:Number):Number</code><p>
   Conversion of Local Civil Time(LCT) to Greenwich Mean Sidereal Time(GMST)
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">year</span>:int</code> &mdash; 년 
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">month</span>:int</code> &mdash; 월
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">fractionalDay</span>:Number</code> &mdash; 분수값을 가지는 일(day)
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">timezoneOffset</span>:Number</code> &mdash; KST의 경우 -540 minutes( = -9 hours ), 경도 0도 부터 동쪽은 -, 서쪽은 +값이고 반드시 단위는 minute이어야 한다.
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash;  Greenwich Mean Sidereal Time(GMST) in radians
   </td>
</tr>
</table>
</div>
<a name="LCT2JD()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">LCT2JD</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function LCT2JD(year:int, month:int, fractionalDay:Number, timezoneOffset:Number = -540):Number</code><p>
   Conversion of Local Civil Time (LCT) to Julian Date(JD) 
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">year</span>:int</code> &mdash; 년 
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">month</span>:int</code> &mdash; 월
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">fractionalDay</span>:Number</code> &mdash; 분수값을 가지는 일(day)
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">timezoneOffset</span>:Number</code> (default = <code>-540</code>)<code></code> &mdash; KST의 경우 -540 minutes( = -9 hours ), 경도 0도 부터 동쪽은 -, 서쪽은 +값이고 반드시 단위는 minute이어야 한다. 
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code></td>
</tr>
</table>
</div>
<a name="LCT2LAST()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">LCT2LAST</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function LCT2LAST(year:int, month:int, fractionalDay:Number, timezoneOffset:Number, obsLongitude:Number, nutationInLongitude:Number, obliquityOfEclipse:Number):Number</code><p>
   Conversion of Local Civil Time(LCT) to Local Apparent Sidereal Time(LAST)
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">year</span>:int</code> &mdash; 년 
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">month</span>:int</code> &mdash; 월
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">fractionalDay</span>:Number</code> &mdash; 분수값을 가지는 일(day)
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">timezoneOffset</span>:Number</code> &mdash; KST의 경우 -540 minutes( = -9 hours ), 경도 0도 부터 동쪽은 -, 서쪽은 +값이고 반드시 단위는 minute이어야 한다.
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">obsLongitude</span>:Number</code> &mdash; observer longitude in degrees, East is Positive
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">nutationInLongitude</span>:Number</code> &mdash; the nutation in longitude in radian
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">obliquityOfEclipse</span>:Number</code> &mdash; the true obliquity of the ecliptic in radian
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash;  Greenwich Apparent Sidereal Time(LAST) in radians
   </td>
</tr>
</table>
</div>
<a name="LCT2LMST()"></a>
<table cellspacing="0" cellpadding="0" class="detailHeader">
<tr>
<td class="detailHeaderName">LCT2LMST</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule">&nbsp;</td>
</tr>
</table>
<div class="detailBody">
<code>public static function LCT2LMST(year:int, month:int, fractionalDay:Number, timezoneOffset:Number, obsLongitude:Number):Number</code><p>
   Conversion of Local Civil Time(LCT) to Local Mean Sidereal Time(LMST)
   </p><span class="label">Parameters</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20px"></td><td><code><span class="label">year</span>:int</code> &mdash; 년 
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">month</span>:int</code> &mdash; 월
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">fractionalDay</span>:Number</code> &mdash; 분수값을 가지는 일(day)
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">timezoneOffset</span>:Number</code> &mdash; KST의 경우 -540 minutes( = -9 hours ), 경도 0도 부터 동쪽은 -, 서쪽은 +값이고 반드시 단위는 minute이어야 한다.
   </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">obsLongitude</span>:Number</code> &mdash; observer longitude in degrees, East is Positive
   </td>
</tr>
</table>
<p></p>
<span class="label">Returns</span>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="20"></td><td><code>Number</code> &mdash;  Greenwich Mean Sidereal Time(LMST) in radians
   </td>
</tr>
</table>
</div>
<br>
<br>
<hr>
<br>
<p></p>
<center class="copyright">Author : Yongho, Ji (jidolstar@gmail.com)</center>
</div>
</body>
</html>
<!--Author : Yongho, Ji (jidolstar@gmail.com)-->
